Design and fatigue assessment of the hybrid monopile connection details using finite element analysis

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The hybrid monopile is a substructure concept for offshore wind turbines initially designed and developed by Fistuca B.V. This Thesis is about the initial concept design of the connection details in the hybrid monopile. Several concept connections are designed. The best concept is selected and thereafter assessed on the ultimate limit state, serviceability limit state and the fatigue limit state. This is all done using the finite element program ANSYS APDL.